CN207439003U - A kind of cryogenic cold energy retracting device and air supply system - Google Patents
A kind of cryogenic cold energy retracting device and air supply system Download PDFInfo
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- CN207439003U CN207439003U CN201721198661.5U CN201721198661U CN207439003U CN 207439003 U CN207439003 U CN 207439003U CN 201721198661 U CN201721198661 U CN 201721198661U CN 207439003 U CN207439003 U CN 207439003U
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Abstract
The utility model provides a kind of cryogenic cold energy retracting device and air supply system, is related to technical field of energy utilization.The cryogenic cold energy retracting device includes nitrogen heat exchanger, expanding machine and elevated pressure nitrogen transfer pipeline, elevated pressure nitrogen heat releasing passage, pressure nitrogen reflux passage and cryogen transfer passage are provided on nitrogen heat exchanger, the inlet communication of elevated pressure nitrogen transfer pipeline and elevated pressure nitrogen heat releasing passage, the outlet of elevated pressure nitrogen heat releasing passage connects respectively with the outlet of the high-pressure liquid nitrogen of nitrogen heat exchanger and expander inlet, the inlet communication of expander outlet and the pressure nitrogen reflux passage on nitrogen heat exchanger.It is transferred using nitrogen as cold, cryogen is safe and reliable without external compression.The air supply system includes above-mentioned cryogenic cold energy retracting device, can utilize the cold recovery in liquefied natural gas supplying station or ethylene Vaporizing Station, and cryogenic cold energy retracting device is in parallel with conventional direct boiling feeder, and device start-stop does not influence to supply.
Description
Technical field
The utility model is related to technical field of energy utilization, in particular to a kind of cryogenic cold energy retracting device and confession
Gas system.
Background technology
Natural gas is as clean energy resource, and utilization is more and more extensive, and NG plant gas and part use liquid ethylene as raw material
Chemical plant, frequently with low temperature liquid vaporize mode continuous phase to stablize supply, supply gas pressure is higher, and flow is also larger, NG or
Ethylene etc. is unwilling that cold energy supply is larger, and the acquisition of cryogenic cold energy needs to consume more energy using compressor compresses, closes
The cold recovery mode of reason is liquid nitrogen, further obtains cryogenic air separation fluid product, and reduces the thermal energy needed for cryogen vaporization
Consumption, kills two birds with one stone.Although many cold recovery patents come out in recent years, many and impracticable, industrial applications have centainly
Gap.
Utility model content
The purpose of this utility model is to provide a kind of cryogenic cold energy retracting devices, it is desirable to provide a kind of specialty, practical
And efficient cold energy retracting device, there are energy-saving and emission-reduction, increase economic efficiency.
The another object of the utility model is to provide a kind of air supply system, can be in high efficiente callback feeder it is cold
Can, it plays the role of energy saving.
The utility model is realized in this way：
A kind of cryogenic cold energy retracting device including nitrogen heat exchanger, expanding machine and elevated pressure nitrogen transfer pipeline, is set on nitrogen heat exchanger
Elevated pressure nitrogen heat releasing passage, pressure nitrogen reflux passage and cryogen transfer passage are equipped with, elevated pressure nitrogen transfer pipeline leads to elevated pressure nitrogen heat release
The inlet communication in road, the outlet of elevated pressure nitrogen heat releasing passage connect respectively with the outlet of the high-pressure liquid nitrogen of nitrogen heat exchanger and expander inlet
It is logical, the inlet communication of expander outlet and the pressure nitrogen reflux passage on nitrogen heat exchanger.
Further, in the utility model preferred embodiment, cryogenic cold energy retracting device further includes cooler, expansion
The supercharging input terminal of machine is connected with medium pressure nitrogen pipe network, the supercharging output terminal of expanding machine and the inlet communication of cooler, cooler
The inlet communication that outlet passes through elevated pressure nitrogen transfer pipeline and elevated pressure nitrogen heat releasing passage.
Further, in the utility model preferred embodiment, nitrogen heat exchanger further includes medium pressure nitrogen heat releasing passage, middle pressure
The import of nitrogen heat releasing passage is connected with medium pressure nitrogen pipe network, and the outlet of medium pressure nitrogen heat releasing passage and the supercharging input terminal of expanding machine connect
Logical, the supercharging output terminal of expanding machine passes through elevated pressure nitrogen transfer pipeline and the inlet communication of elevated pressure nitrogen heat releasing passage.
Further, in the utility model preferred embodiment, separation is provided on elevated pressure nitrogen heat releasing passage and takes out mouth, point
It is connected respectively with the outlet of the high-pressure liquid nitrogen of nitrogen heat exchanger and expander inlet from mouth is taken out.
Further, in the utility model preferred embodiment, elevated pressure nitrogen heat releasing passage includes the first elevated pressure nitrogen heat release
Passage and the second elevated pressure nitrogen heat releasing passage, the import of the first elevated pressure nitrogen heat releasing passage and the second elevated pressure nitrogen heat releasing passage with expansion
The supercharging output terminal connection of machine, the outlet of the first elevated pressure nitrogen heat releasing passage and the high-pressure liquid nitrogen outlet of nitrogen heat exchanger, second
The outlet of elevated pressure nitrogen heat releasing passage is connected with expander inlet.
Further, in the utility model preferred embodiment, cryogenic cold energy retracting device further includes knockout drum, separation
The entrance of tank and the outlet of expanding machine, the gaseous phase outlet of knockout drum are connected with the pressure nitrogen reflux passage on nitrogen heat exchanger.
Further, in the utility model preferred embodiment, cryogenic cold energy retracting device further includes liquid nitrogen supercooling system
System, liquid nitrogen subcooling system include low-temperature receiver re-heat passage, the outlet of the first liquid nitrogen and the outlet of the second liquid nitrogen；
The liquid-phase outlet of knockout drum and the high-pressure liquid nitrogen of nitrogen heat exchanger export the inlet communication with liquid nitrogen subcooling system, the
The outlet of two liquid nitrogen is connected with air-separating plant or pressure oxygen liquefying plant；
Low pressure nitrogen re-heat passage, outlet and the low pressure nitrogen re-heat passage of low-temperature receiver re-heat passage are additionally provided on nitrogen heat exchanger
Inlet communication.
Further, in the utility model preferred embodiment, low pressure nitrogen transfer pipeline is additionally provided on nitrogen heat exchanger,
The import of low pressure nitrogen transfer pipeline is connected with air-separating plant or pressure oxygen liquefying plant, the outlet of low pressure nitrogen transfer pipeline with
The inlet communication of low pressure nitrogen re-heat passage.
Further, in the utility model preferred embodiment, cryogenic cold energy retracting device further includes low-temperature pressure nitrogen
Transfer pipeline, the import of low-temperature pressure nitrogen transfer pipeline are connected with air-separating plant or pressure oxygen liquefying plant, low-temperature pressure
The outlet of nitrogen transfer pipeline is connected with pressure nitrogen reflux passage.
A kind of air supply system, including supply station and above-mentioned cryogenic cold energy retracting device, the cryogen transfer passage of nitrogen heat exchanger
Import be connected with supply station, supply station be liquefied natural gas supplying station or ethylene Vaporizing Station.
The beneficial effects of the utility model are：The cryogenic cold energy retracting device that the utility model is obtained by above-mentioned design,
It is exchanged heat elevated pressure nitrogen by nitrogen by the cryogen transfer passage transporting low temperature cold on nitrogen heat exchanger and main temperature end cold
The elevated pressure nitrogen heat releasing passage of device obtains partial high pressure liquid nitrogen after being cooled down, and most elevated pressure nitrogen is passed through expander
Low temperature cold is generated afterwards, this part low temperature cold is provided by the pressure nitrogen reflux passage on nitrogen heat exchanger in returning after cold
Press nitrogen pipe network.The utility model is transferred using nitrogen as cold, and cryogen is safe and reliable without external compression.The utility model also carries
A kind of air supply system has been supplied, including above-mentioned cryogenic cold energy retracting device, liquefied natural gas supplying station or ethylene can have been vaporized
Cold recovery in standing utilizes, and cryogenic cold energy retracting device is in parallel with the direct boiling feeder of routine, device start-stop not shadow
Supply is rung, not only recycled cold energy but also reduces vaporization supply station to the demand of thermal energy, achievees the effect that kill two birds with one stone.
Description of the drawings
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that and the following drawings illustrates only some embodiments of the utility model, therefore not
The restriction to scope is should be considered as, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is the structure diagram for the cryogenic cold energy retracting device that the utility model first embodiment provides；
Fig. 2 is the structure diagram for the cryogenic cold energy retracting device that the utility model second embodiment provides；
Fig. 3 is the structure diagram for the cryogenic cold energy retracting device that the utility model 3rd embodiment provides；
Fig. 4 is the structure diagram for the cryogenic cold energy retracting device that the utility model fourth embodiment provides；
Fig. 5 is the structure diagram for the cryogenic cold energy retracting device that the 5th embodiment of the utility model provides；
Fig. 6 is the structure diagram for the cryogenic cold energy retracting device that the utility model sixth embodiment provides；
Fig. 7 is the structure diagram for the cryogenic cold energy retracting device that the 7th embodiment of the utility model provides.
Icon：100a- cryogenic cold energy retracting devices；100b- cryogenic cold energy retracting devices；100c- cryogenic cold energies recycling dress
It puts；100d- cryogenic cold energy retracting devices；100e- cryogenic cold energy retracting devices；100f- cryogenic cold energy retracting devices；100g- is low
Warm cold energy retracting device；110- nitrogen heat exchangers；111- high-pressure liquid nitrogens export；112- cryogen transfer passages；113- low pressure nitrogens convey
Pipeline；114- elevated pressure nitrogen heat releasing passages；1142- the first elevated pressure nitrogen heat releasing passages；1144- the second elevated pressure nitrogen heat releasing passages；115-
Mouth is taken out in separation；116- pressure nitrogen reflux passages；117- low pressure nitrogen re-heat passages；118- medium pressure nitrogen heat releasing passages；119- low temperature pressures
Power nitrogen transfer pipeline；120- expanding machines；122- expander inlets；124- expander outlets；126- is pressurized input terminal；128- is pressurized
Output terminal；130- elevated pressure nitrogen transfer pipelines；140- coolers；150- knockout drums；160- liquid nitrogen subcooling systems；162- low-temperature receiver re-heats
Passage；The first liquid nitrogen of 164- exports；The second liquid nitrogen of 166- exports.
Specific embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with this practicality
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in new embodiment, shows
So, described embodiment is the embodiment of a part of embodiment of the utility model rather than whole.Based on this practicality
Embodiment in new, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit claimed the scope of the utility model, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained under the premise of dynamic, shall fall within the protection scope of the present invention.
In the description of the utility model, it is to be understood that term " on ", " under ", " vertical ", " level ", " top ",
The orientation or position relationship of the instructions such as " bottom ", " interior ", " outer " are based on orientation shown in the drawings or position relationship, merely to just
In description the utility model and simplified description rather than instruction or imply that signified equipment or element must be with specific sides
Position, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
" under " can be contacted directly including the first and second features, it is not to contact directly but lead to that can also include the first and second features
Cross the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper or is merely representative of fisrt feature level height higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature immediately below second feature and obliquely downward or only
Represent that fisrt feature level height is less than second feature.
First embodiment
Fig. 1 is refer to, the utility model embodiment provides a kind of cryogenic cold energy retracting device 100a, including nitrogen heat exchanger
110th, expanding machine 120 and elevated pressure nitrogen transfer pipeline 130 are provided with elevated pressure nitrogen heat releasing passage 114, pressure nitrogen on nitrogen heat exchanger 110
Reflux passage 116 and cryogen transfer passage 112, the inlet communication of elevated pressure nitrogen transfer pipeline 130 and elevated pressure nitrogen heat releasing passage 114,
The outlet of elevated pressure nitrogen heat releasing passage 114 connects respectively with the high-pressure liquid nitrogen of nitrogen heat exchanger 110 outlet 111 and expander inlet 122,
The inlet communication of expander outlet 124 and the pressure nitrogen reflux passage 116 on nitrogen heat exchanger 110.
It should be noted that the utility model embodiment conveyed by the cryogen transfer passage 112 on nitrogen heat exchanger 110 it is low
Warm cold and main temperature end cold, by elevated pressure nitrogen after the elevated pressure nitrogen heat releasing passage 114 of nitrogen heat exchanger 110 is cooled down
Low temperature cold is generated after expanding machine 120 expands to partial high pressure liquid nitrogen, and by most elevated pressure nitrogen, by this part low temperature
Cold returns to medium pressure nitrogen pipe network after providing cold by the pressure nitrogen reflux passage 116 on nitrogen heat exchanger 110.The utility model is adopted
It is transferred by the use of nitrogen as cold, cryogen is safe and reliable without external compression, and the rate of recovery of cold is high.
Specifically, the outlet of pressure nitrogen reflux passage 116 is connected with medium pressure nitrogen pipe network, through 116 liters of pressure nitrogen reflux passage
Pressure nitrogen after temperature returns to medium pressure nitrogen pipe network.The form of medium pressure nitrogen pipe network is unlimited, only refers to the system containing medium pressure nitrogen, specifically can be with
It is made choice according to actual process condition.
Specifically, high-pressure liquid nitrogen outlet 111 and expanding machine of the outlet of elevated pressure nitrogen heat releasing passage 114 with nitrogen heat exchanger 110
The mode of communicating of entrance 122 is unlimited, can be any way provided in the utility model embodiment, you can with such as the present embodiment
In set in the nitrogen heat exchanger 110 and take out mouth, or as with the second embodiment into before nitrogen heat exchanger 110 by elevated pressure nitrogen
It is divided into two strands into nitrogen heat exchanger 110.High-pressure liquid nitrogen outlet 111 is that the elevated pressure nitrogen to be cooled down by elevated pressure nitrogen heat releasing passage 114 continues
Cool down obtained supercooling high-pressure liquid nitrogen product.
Further, cryogenic cold energy retracting device 100a further includes cooler 140, the supercharging input terminal 126 of expanding machine 120
It is connected with medium pressure nitrogen pipe network, the inlet communication of the supercharging output terminal 128 and cooler 140 of expanding machine 120, cooler 140 goes out
Mouth passes through the inlet communication of elevated pressure nitrogen transfer pipeline 130 and elevated pressure nitrogen heat releasing passage 114.Medium pressure nitrogen is pressurized by expanding machine 120
Nitrogen heat exchanger 110 is entered back into after being cooled down afterwards using cooler 140.
Further, separation is provided on elevated pressure nitrogen heat releasing passage 114 and takes out mouth 115, separation takes out mouth 115 and exchanges heat respectively with nitrogen
The high-pressure liquid nitrogen outlet 111 of device 110 is connected with expander inlet 122.By adjusting the guide vane opening of expanding machine 120, by big portion
The elevated pressure nitrogen divided pumps expanding machine 120 and carries out expansion cooling, obtains low temperature cold and passes through the progress re-heat of pressure nitrogen reflux passage 116
Enter medium pressure nitrogen pipe network afterwards.
It should be noted that the cryogenic cold energy retracting device 100a provided in the present embodiment, into nitrogen heat exchanger 110 it
It is preceding tentatively to be cooled down with cooler 140, it is not many supply stations suitable for cryogen amount.
Second embodiment
It refer to Fig. 2, the cryogenic cold energy retracting device 100b that the utility model embodiment is provided, realization principle and production
Raw technique effect is identical with first embodiment, and to briefly describe, the present embodiment does not refer to part, can refer in first embodiment
Corresponding contents.The difference is that be not provided with cooler 140 in the present embodiment, but by nitrogen heat exchanger 110 to medium pressure nitrogen into
The preliminary cooling of row.
Further, nitrogen heat exchanger 110 further includes medium pressure nitrogen heat releasing passage 118, the import of medium pressure nitrogen heat releasing passage 118 with
Medium pressure nitrogen pipe network connects, and the outlet of medium pressure nitrogen heat releasing passage 118 is connected with the supercharging input terminal 126 of expanding machine 120, expanding machine
120 supercharging output terminal 128 passes through elevated pressure nitrogen transfer pipeline 130 and the inlet communication of elevated pressure nitrogen heat releasing passage 114.
Specifically, medium pressure nitrogen is carried out just before the supercharging input terminal 126 into expanding machine 120 by nitrogen heat exchanger 110
Then step cooling carries out low temperature and boosts to obtain elevated pressure nitrogen entering elevated pressure nitrogen heat releasing passage 114 and cooling down again.The utility model embodiment
The cryogenic cold energy retracting device 100b provided is suitable for the more sufficient supply station of cryogen amount.
3rd embodiment
It refer to Fig. 3, the cryogenic cold energy retracting device 100c that the utility model embodiment is provided, realization principle and production
Raw technique effect is identical with second embodiment, and to briefly describe, the present embodiment does not refer to part, can refer in second embodiment
Corresponding contents.The difference is that embodiment adds knockout drums 150.
Further, cryogenic cold energy retracting device 100c further includes knockout drum 150, the entrance and expanding machine of knockout drum 150
120 outlet, the gaseous phase outlet of knockout drum 150 are connected with the pressure nitrogen reflux passage 116 on nitrogen heat exchanger 110.Expansion
The outlet band liquid of machine 120, sets knockout drum 150 that can carry out gas-liquid separation, the liquid-phase outlet in bottom obtains pressure liquid nitrogen, gas
Mutually outlet back pressure nitrogen pipe network after 116 re-heat of pressure nitrogen reflux passage.The cryogenic cold energy that the utility model embodiment is provided
Retracting device 100c is suitable for the supply station of cryogen amount abundance.
In other embodiments, high-pressure liquid nitrogen outlet 111 can also be connected by throttle valve with the entrance of knockout drum 150.
Fourth embodiment
It refer to Fig. 4, the cryogenic cold energy retracting device 100d that the utility model embodiment is provided, realization principle and production
Raw technique effect is identical with 3rd embodiment, and to briefly describe, the present embodiment does not refer to part, can refer in 3rd embodiment
Corresponding contents.The difference is that the present embodiment elevated pressure nitrogen sets two entrances in nitrogen heat exchanger 110.
Further, elevated pressure nitrogen heat releasing passage 114 includes the first elevated pressure nitrogen heat releasing passage 1142 and the second elevated pressure nitrogen heat release
Passage 1144, the import of the first elevated pressure nitrogen heat releasing passage 1142 and the second elevated pressure nitrogen heat releasing passage 1144 with expanding machine 120
Supercharging output terminal 128 connects, the outlet of the first elevated pressure nitrogen heat releasing passage 1142 and the high-pressure liquid nitrogen outlet 111 of nitrogen heat exchanger 110
Connection, the outlet of the second elevated pressure nitrogen heat releasing passage 1144 is connected with expander inlet 122.
Specifically, in the present embodiment two elevated pressure nitrogen transfer pipelines 130 is set to be fed, passes through the first elevated pressure nitrogen heat release
1142 and second elevated pressure nitrogen heat releasing passage 1144 of passage carries out cooling the latter as output of products respectively, another enters expansion
Machine 120 is expanded.
5th embodiment
It refer to Fig. 5, the cryogenic cold energy retracting device 100e that the utility model embodiment is provided, realization principle and production
Raw technique effect is identical with 3rd embodiment, and to briefly describe, the present embodiment does not refer to part, can refer in 3rd embodiment
Corresponding contents.The difference is that embodiment adds low-temperature pressure nitrogen transfer pipelines 119.
Further, cryogenic cold energy retracting device 100e further includes low-temperature pressure nitrogen transfer pipeline 119, and low-temperature pressure nitrogen is defeated
The import of pipeline 119 is sent to be connected with air-separating plant or pressure oxygen liquefying plant, the outlet of low-temperature pressure nitrogen transfer pipeline 119
It is connected with pressure nitrogen reflux passage 116.
Specifically, air-separating plant or pressure oxygen liquefying plant extract one low-temperature pressure nitrogen and are incorporated to nitrogen heat exchanger
110 116 re-heat of pressure nitrogen reflux passage.The warm end temperature difference of air-separating plant or pressure oxygen liquefying plant is further reduced,
High efficiente callback cold.
Sixth embodiment
It refer to Fig. 6, the cryogenic cold energy retracting device 100f that the utility model embodiment is provided, realization principle and production
Raw technique effect is identical with 3rd embodiment, and to briefly describe, the present embodiment does not refer to part, can refer in 3rd embodiment
Corresponding contents.The difference is that embodiment adds liquid nitrogen subcooling systems 160.
Further, cryogenic cold energy retracting device 100f further includes liquid nitrogen subcooling system 160, and liquid nitrogen subcooling system 160 wraps
Include low-temperature receiver re-heat passage 162, the outlet 164 of the first liquid nitrogen and the second liquid nitrogen outlet 166；The liquid-phase outlet and nitrogen of knockout drum 150 change
The high-pressure liquid nitrogen of hot device 110 exports 111 inlet communication with liquid nitrogen subcooling system 160, the second liquid nitrogen outlet 166 and air point
It is connected from device or pressure oxygen liquefying plant；Low pressure nitrogen re-heat passage 117 is additionally provided on nitrogen heat exchanger 110, low-temperature receiver re-heat is led to
The outlet in road 162 and the inlet communication of low pressure nitrogen re-heat passage 117.Cryogenic cold energy retracting device 100f can be in nitrogen heat-exchange system
Obtain liquid nitrogen product.
Specifically, the liquid nitrogen of 111 output of the liquid-phase outlet of knockout drum 150 and high-pressure liquid nitrogen outlet enters liquid nitrogen subcooling system
160, nitrogen products are obtained in the first liquid nitrogen outlet 164, the liquid nitrogen of 166 output of the second liquid nitrogen outlet enters air separation unit or oxygen liquid
Makeup is put；As the low pressure nitrogen after overfreezing liquid nitrogen low-temperature receiver re-heat by after 117 re-heat of low pressure nitrogen re-heat passage to room temperature be vented or
Remove low pressure nitrogen pipe network.
In addition, the liquid nitrogen of 111 output of high-pressure liquid nitrogen outlet also can partly or entirely enter knockout drum as needed.
7th embodiment
It refer to Fig. 7, the cryogenic cold energy retracting device 100g that the utility model embodiment is provided, realization principle and production
Raw technique effect is identical with sixth embodiment, and to briefly describe, the present embodiment does not refer to part, can refer in sixth embodiment
Corresponding contents.The difference is that cryogenic cold energy retracting device 100g adds low-temperature pressure nitrogen transfer pipeline 119 and low pressure nitrogen
Transfer pipeline 113, low-temperature pressure nitrogen transfer pipeline 119, which refer to, above-mentioned introduces content.
Further, be additionally provided with low pressure nitrogen transfer pipeline 113 on nitrogen heat exchanger 110, low pressure nitrogen transfer pipeline 113 into
Mouth is connected with air-separating plant or pressure oxygen liquefying plant, outlet and the low pressure nitrogen re-heat passage of low pressure nitrogen transfer pipeline 113
117 inlet communication.Using this example, can low temperature can be passed through with recovery section air separation unit or the cold of oxygen liquefying plant
Pressure nitrogen transfer pipeline 119 or low pressure nitrogen transfer pipeline 113 are accessed, preferably by low-temperature pressure nitrogen transfer pipeline 119
Access.
It should be noted that the air separation unit or oxygen liquefying plant that are referred in the utility model are general energy resource system,
It is to utilize the cold in energy resource system, the concrete structure and operation principle of system are roughly the same with existing device,
This, which does not do, excessively repeats.
The utility model additionally provides a kind of air supply system, and including supply station and above-mentioned cryogenic cold energy retracting device, nitrogen changes
The import of the cryogen transfer passage of hot device is connected with supply station, and supply station is liquefied natural gas supplying station or ethylene Vaporizing Station.Energy
Enough cold recoveries by liquefied natural gas supplying station or ethylene Vaporizing Station utilize, and cryogenic cold energy retracting device is direct with routine
It is in parallel to vaporize feeder, device start-stop does not influence to supply.
In conclusion the utility model provides a kind of cryogenic cold energy retracting device, pass through the cryogen on nitrogen heat exchanger
Transfer passage transporting low temperature cold and main temperature end cold carry out elevated pressure nitrogen by the elevated pressure nitrogen heat releasing passage of nitrogen heat exchanger
Partial high pressure liquid nitrogen is obtained after cooling, and most elevated pressure nitrogen is generated into low temperature cold after expander, by this portion
Low temperature cold is divided to pass through after the pressure nitrogen reflux passage on nitrogen heat exchanger provides cold and returns to medium pressure nitrogen pipe network.The utility model is adopted
It is transferred by the use of nitrogen as cold, cryogen is safe and reliable without external compression.The utility model additionally provides a kind of air supply system, bag
Above-mentioned cryogenic cold energy retracting device is included, the cold recovery in liquefied natural gas supplying station or ethylene Vaporizing Station can be utilized, it is low
Warm cold energy retracting device is in parallel with conventional direct boiling feeder, and device start-stop does not influence to supply.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.It is all in the spiritual and former of the utility model
Within then, any modifications, equivalent replacements and improvements are made should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of cryogenic cold energy retracting device, which is characterized in that including nitrogen heat exchanger, expanding machine and elevated pressure nitrogen transfer pipeline, institute
It states and elevated pressure nitrogen heat releasing passage, pressure nitrogen reflux passage and cryogen transfer passage is provided on nitrogen heat exchanger, the elevated pressure nitrogen conveying
The inlet communication of pipeline and the elevated pressure nitrogen heat releasing passage, the outlet of the elevated pressure nitrogen heat releasing passage respectively with the nitrogen heat exchanger
High-pressure liquid nitrogen outlet connected with the expander inlet, the pressure nitrogen on the expander outlet and the nitrogen heat exchanger
The inlet communication of reflux passage.
2. cryogenic cold energy retracting device according to claim 1, which is characterized in that the cryogenic cold energy retracting device also wraps
Include cooler, the supercharging input terminal of the expanding machine is connected with medium pressure nitrogen pipe network, the supercharging output terminal of the expanding machine with it is described
The inlet communication of cooler, the outlet of the cooler pass through the elevated pressure nitrogen transfer pipeline and the elevated pressure nitrogen heat releasing passage
Inlet communication.
3. cryogenic cold energy retracting device according to claim 2, which is characterized in that the nitrogen heat exchanger further includes medium pressure nitrogen
Heat releasing passage, the import of medium pressure nitrogen heat releasing passage are connected with medium pressure nitrogen pipe network, and medium pressure nitrogen heat releasing passage goes out
Mouthful connected with the supercharging input terminal of the expanding machine, the supercharging output terminal of the expanding machine by the elevated pressure nitrogen transfer pipeline and
The inlet communication of the elevated pressure nitrogen heat releasing passage.
4. cryogenic cold energy retracting device according to claim 3, which is characterized in that set on the elevated pressure nitrogen heat releasing passage
There is separation to take out mouth, the separation is taken out mouth and connected respectively with the outlet of the high-pressure liquid nitrogen of the nitrogen heat exchanger and the expander inlet.
5. cryogenic cold energy retracting device according to claim 3, which is characterized in that the elevated pressure nitrogen heat releasing passage includes the
One elevated pressure nitrogen heat releasing passage and the second elevated pressure nitrogen heat releasing passage, the first elevated pressure nitrogen heat releasing passage and second elevated pressure nitrogen are put
The import of the passage of heat is connected with the supercharging output terminal of the expanding machine, the outlet of the first elevated pressure nitrogen heat releasing passage with it is described
The high-pressure liquid nitrogen outlet of nitrogen heat exchanger, the outlet of the second elevated pressure nitrogen heat releasing passage are connected with the expander inlet.
6. cryogenic cold energy retracting device according to claim 4, which is characterized in that the cryogenic cold energy retracting device also wraps
Include knockout drum, the outlet of the entrance of the knockout drum and the expanding machine, the gaseous phase outlet of the knockout drum and the nitrogen
Pressure nitrogen reflux passage connection on heat exchanger.
7. cryogenic cold energy retracting device according to claim 6, which is characterized in that the cryogenic cold energy retracting device also wraps
Liquid nitrogen subcooling system is included, the liquid nitrogen subcooling system includes low-temperature receiver re-heat passage, the outlet of the first liquid nitrogen and the outlet of the second liquid nitrogen；
The high-pressure liquid nitrogen of the liquid-phase outlet of the knockout drum and the nitrogen heat exchanger outlet with the liquid nitrogen subcooling system into
Mouth connection, the second liquid nitrogen outlet are connected with air-separating plant or pressure oxygen liquefying plant；
Low pressure nitrogen re-heat passage is additionally provided on the nitrogen heat exchanger, outlet and the low pressure nitrogen of the low-temperature receiver re-heat passage are answered
The inlet communication of the passage of heat.
8. cryogenic cold energy retracting device according to claim 7, which is characterized in that be additionally provided on the nitrogen heat exchanger low
Nitrogen transfer pipeline is pressed, the import of the low pressure nitrogen transfer pipeline is connected with air-separating plant or pressure oxygen liquefying plant, described
The outlet of low pressure nitrogen transfer pipeline and the inlet communication of the low pressure nitrogen re-heat passage.
9. the cryogenic cold energy retracting device according to claim 6 or 8, which is characterized in that the cryogenic cold energy retracting device
Further include low-temperature pressure nitrogen transfer pipeline, import and air-separating plant or the pressure oxygen liquid of the low-temperature pressure nitrogen transfer pipeline
Makeup is put connected, and the outlet of the low-temperature pressure nitrogen transfer pipeline is connected with the pressure nitrogen reflux passage.
10. a kind of air supply system, which is characterized in that including the cryogenic cold energy any one of supply station and claim 1-9
Retracting device, the import of the cryogen transfer passage of the nitrogen heat exchanger are connected with the supply station, and the supply station is liquid
Change natural gas supply station or ethylene Vaporizing Station.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721198661.5U CN207439003U (en) | 2017-09-19 | 2017-09-19 | A kind of cryogenic cold energy retracting device and air supply system |
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|---|---|---|---|
| CN201721198661.5U CN207439003U (en) | 2017-09-19 | 2017-09-19 | A kind of cryogenic cold energy retracting device and air supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489877A (en) * | 2020-11-24 | 2021-03-12 | 西安交通大学 | Electric power high-temperature superconducting conveying system capable of recycling low-temperature cold energy |
-
2017
- 2017-09-19 CN CN201721198661.5U patent/CN207439003U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489877A (en) * | 2020-11-24 | 2021-03-12 | 西安交通大学 | Electric power high-temperature superconducting conveying system capable of recycling low-temperature cold energy |
| CN112489877B (en) * | 2020-11-24 | 2022-04-05 | 西安交通大学 | Electric power high-temperature superconducting conveying system capable of recycling low-temperature cold energy |
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